Improvement in pumps



alista Y hm NATHAN T. OOFFIN, 0F KNIGH'ISTOWN, INDIANA.

Letters Patent No. 113,144, dated March 28, 1871.

IMPRQVEMENT Inv PUMPS.

The Schedule referred to in these Letten Patent and making part of thesame.

1, NATHAN T. COFFIN, of Knightstown, in the county of Henry and State ofIndiana, have invented certain Improvements in PnmpStocks, Pnmp.

Handles, and Handle-Brackets, of which the following is a specification.

Nature and Objects of the '.Ifrwenton.

It consists in casing the stock'in -such a manner as to admit acirculation of thc Warm air rising vfrom the well between the stock andcasing, and

vforming a waste-valve in the stock some distance 'below the spout, andopening into the ysurrounding cases; the object of which devices is toprevent the water in the stock, above the ground or plattform, frombeing frozen, and also so as to admit of a longer stroke of the piston,by which a greater quantity of water can be raised by a given movement0i' the handle.

The second part of my invention relates to the handle or lever, and thebracket in which it ishung as a fulcrum to the pump-stock; and

It consists in constructing the'handle of iron in a manner to make itlight, durable, and, comparatively inexpensive, and to pivoting it in abracket constructed in such a manner that the pin constituting thefulcrnm will be securely held in place,

and which, at the same time, may be readily and conveniently removed forsuch purpose as may be desired.

Description of Accompanying Drawing.

General Description.

The pump-stock A is surrounded with casingB, as shown in tigs'l and 4,the stock extending -but few inches above the spout C, thereby kallowingthe warm air that'l'ises from the well to-circulate as closely over thesurface of the water as practicable, and, at the same time, forming anenlargement of the stock in the upper part, affording room for the playof tiehandle D .and piston-rod' E, by whichI am enabled to secure alonger strokeY of the piston than is attainable with wooden pumpstocksconstructed inthe ordinary manner.

The manner of attaching the casing will be readily understood from aninspection of iig. 4, the casy ing B on three sides being nailed tovertical strips e, so as to ,form the space G, while the casing'B onthat side to which the handle is hung is solid and equal in'thickness tothe casing and space on the other three sides, as shown; the cornersbeing filled with quarter-round strips a, giving a good externalappearance, besides being such a construction as is not liable to warpoff and open unsightly cracks.

The casing extends below the platform F, covering the well, so that thewarm air rising therefrom may passupthe spaces G into the chamber abovethe stock.

To prevent the cold air that may circulate through the spout O fromimpnging directly upon the surface of the water, I pierce the stock witha hole at g just below the spout, which allows the Water'to run ci' atthat point, this distance being so slight that a single stroke ofthehandle is sucient to raise the water to the spout. i

The lower part of' the handle is made of half-oval iron, H, bent intothe form shown, and welded to the solid uppeifend I.

A stay, i, is put into the handle at about the middle of its length, tokeepthe two bars from being pressed together.

Thematerial used, combined with the mode otconstruction, makes a handleof great strength and durabilit Y.

Tile bracket in which the handle is hung consists ofthe cast-iron plateJ', furnished with the projecting jaws O and the stop S.

The plate J has a lug, r, projecting from the inside,

at the bottom, to rest in the bottom oi' the handleslot, and which, inconnection with the smaller lugs, c, at thetop, serves to hold thebracket firmly in place.

ceive the end of the pin which forms the fnlcrum ofthe handle, the endof the pin being bent at a right angle, so that, when it is inserted.through the jaws and handle, the bent end may be turned back into thestop, and there held by the button y.

When it becomes desirable to remove the pin for any purpose, the buttony may be turned,- as indicated by the dotted lines in tig. 2, and thebent end ot' the. pin turnedout of the stop, Whenthe pin may be readilywithdrawn.

This arrangement prevents the pin from being worked out of place.

This arrangement for hanging the handle,lin con- 'lhe stop S is formedin such a manner as to reneetion with the enlargement of the stockheretofore mentioned, enables me to change the leverage,- so as to get along or short4 stroke of the piston, as may be desired.

I make no claim, broadly, to iueasing pump-stocks so as to form annularairspaces around the valve or Water-chamber, as this has been donebefore.

Cla/ima.

I claim as my invention- 1. The pumpfstoek A, open at its upper end, in

combination with the waste-valve g and surrounding easing B, the latterbeing arranged to forma ehamber above the stock, all substantially asand for the purpose set forth.`

2. The bracket J O S, and pin z, and button y, all constructed andarranged substantially as set;

forth.

NATHAN T. COFFIN.

Witnesses: i

O. F. MAYHEW, JOHN POLLETT.

